Understanding the interplay between ICD-11 Complex PTSD and Personality Disorder features in relation to traumatic life events in a trauma exposed community sample

In the ICD-11, PD and CPTSD overlap in impaired aspects of self- and interpersonal functioning, with implications for assessment and treatment. This article aimed to explore the relationship between CPTSD and PD features. A trauma-exposed community sample in Denmark (N = 470) completed the ITQ, PDS-ICD-11, and BTQ. Data were analyzed using exploratory structural equation modeling. Both two- and three-factor models were viable. In the two-factor model, both disturbances in self-organization (DSO) and PD items belonged to the same disturbed self-interpersonal functioning factor. Both factors predicted quality of life and functioning and were predicted by number of life events. In the three-factor model (PTSD, DSO, and PD), there was some overlap between DSO and PD items. Number of life events predicted belonging to the PTSD and DSO classes but not the PD class. The findings demonstrate clear overlapping and differentiating features. Multiple traumas and functioning in self-concept and relationships appear to differentiate.